Added native, faster implementations of .blank? for the core types #2286 [skae]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2319 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 36 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/blank.rb b/activesupport/lib/active_support/core_ext/blank.rb
new file mode 100644
index 0000000000..f56799bc0d
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/blank.rb
@@ -0,0 +1,36 @@
+# The methods here are provided to speed up function blank? in class Object
+class NilClass
+  def blank?
+    true
+  end
+end
+
+class FalseClass
+  def blank?
+    true
+  end
+end
+
+class TrueClass
+  def blank?
+    false
+  end
+end
+
+class Array
+  alias_method :blank?, :empty?
+end
+
+class Hash
+  alias_method :blank?, :empty?
+end
+
+class String
+  def blank?
+    empty? || strip.empty?
+  end
+end
+
+class Numeric
+  alias_method :blank?, :zero?
+end
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